title: Review article: Targeted drug delivery in treatment of intestinal diseases.
abstract: Topical therapy within the treatment of intestinal diseases presents realistic formulation challenges for targeted drug delivery. Some relevant oral formulation concepts are reviewed. The basic principles employed are based mainly on differences in pH and metabolic activity between the different parts of the gastrointestinal tract. A successful example of targeted drug delivery within the treatment of Crohn's disease is presented. Topical therapy for the treatment of ulcerative colitis is also discussed. Physiological variations and influence of the disease and disease status present major challenges when deciding upon a suitable formulation principle.
authors.affiliation: Pharmaceutical and Analytical Research and Development, Astra Draco AB, Lund, Sweden.
authors.forename: M
authors.initials: M
authors.lastname: Wikberg
authors.forename: J
authors.initials: J
authors.lastname: Ulmius
authors.forename: G
authors.initials: G
authors.lastname: Ragnarsson
mesh_terms: D000284:Administration, Oral; D000285:Administration, Rectal; D000818:Animals; D000893:Anti-Inflammatory Agents / Q000008:administration & dosage* / Q000627:therapeutic use; D019819:Budesonide / Q000008:administration & dosage* / Q000627:therapeutic use; D003093:Colitis, Ulcerative / Q000188:drug therapy*; D003424:Crohn Disease / Q000188:drug therapy*; D003692:Delayed-Action Preparations; D016503:Drug Delivery Systems; D006801:Humans; D007420:Intestine, Large / Q000378:metabolism*; D007421:Intestine, Small / Q000378:metabolism*
chemical_list: D000893:Anti-Inflammatory Agents; D003692:Delayed-Action Preparations; D019819:Budesonide